Method of and apparatus for cutting lengths from a continuously-fed bundle of artificial threads, filaments, and the like



- A. BEmA 1,723,998 METHOD OF AND APPARATUS FOR CUTTING LENGTHS FROM ACONTINUOUSLY FED BUNDLE 0F ARTIFICIAL THREADS, FILAMENTS, AND THE LIKEFiled April 19, 1928 Jwmwtoz patented dug. l3, 1929. p s

STATES PATENT OFFICE.

anrouronnnrn, or runrn, rranr, assremou 'ro .socinrA ITALIANA navormzrom'necennrcnn, or Team, rrALYi r manner) or arm arrann'rns roia cn'rrrNG'JLENGTHS FROMA coirrInUousLY-I'En nunnnn or ARTIIEZIGIAE THREADS,FILAMENTS, AND THE LrKE.

Application filed a ru n, rear, seri l are. 271,337, and in tin April20, 1927'.

This invention relates to a method and apparatus for cutting a bundle ofartificial threads, filaments, and the like, particularly artificialsilk, into any desired length or lengths as the bundle is rapidly andcontinuously fed from a spinning machine.

lln prior cutting machines and methods, it

' is necessary to feed the bundle of threads at a comparatively lowspeed in order to obtain short pieces of uniform length. If the bundleis fed at a high rate of speed, the cut pieces are irregular in lengthand the result, therefore, unsatisfactory.

'llhe main difiiculty encountered by the known cutting machines whenworking at a high speed is due to the fact that the feeding of thebundle of threads is not uniform between the successive cuts, because ofthe comparatively light weight of the thread.

This difficulty is overcome by the present invention which subjects thebundle of threads to centrifugal action as it is fed to the cutter. llhecentrifugal action insures a uniform feeding of the threads to thecutter between successive cuts,

' llt has also been proposed to cut the thread as it leaves the spinningnozzle of the spinning machine, but there is the disadvantage underthose conditions that the speed at which the bundle'is fed to the cutterdepends on. the spinning speed,

(in the other hand, my invention, which provides for the cuttingoperation at a distance from the spinning nozzles,-makes it possible toregulate the speed of the thread as it is fed to the cutter and permitsthe thread to acquire the desired degree of compactness before being cutinto lengths.

The accompanying drawing shows, by Way of example, a side view partly insection, of an embodiment of a cutting apparatus according to myinvention.

The apparatus comprises a hopper a formed integral with a disc 6, androtated at a relatively high speed on its vertical axis, shown indot-and-dash line, by any suitable means such as a belt engaging apulley 0. secured to the spindle of said disc 5.

The bundle of filaments or threads, of artificial silk for example,issuing at a given constant speed from the spinning machine or ma chines(not shown) is fed to the hopper a in substantially the directionindicated by the arrow and asses through the angular opening in thebottom thereof. As shown, this off as the passageway 6 passes the cutterf,

and drops by it own weight to the point 9.

r The length of the cut pieces may be changed by adjusting the speed atwhich the thread is fed to the hopper a, or the angular speed of thedisc 6. Two or more cutters similar to cutter f may also be provided atspaced 'points around the periphery of the disc 6 to alter the length ofthe cut pieces.

I claim: i

l. lln an apparatus for cutting lengths from a supply of thread, meansfor subjecting the thread to the action of centrifugal forces andcutting means arranged at right angles to the direction of said act-ionfor cutting the thread into pieces of uniform length.

2. In an apparatus for cutting lengths from thread, the combination of arotatable disc having a passageway leading from the center of'one ofvits faces and terminating on its periphery, and a stationary cutterhaving its cutting edge located at the periphery of said disc.

3. ln an apparatus for cutting lengths from thread, the combination of arotatabledisc having a passageway terminating on its pe riphery, asupply hopper arranged on said disc coanially therewith and leading intothe said passageway, and a stationary cutter having its cutting edgelocated at the periphery of said disc.

4. In an apparatus for cutting lengths from thread, the combination of arotatable disc having a passageway terminating on its periphery, asupply hopper arranged .on said disc coaxially therewith and leadinginto the said passageway, means for rotating said disc, and a stationarycutter having its cutting edge located at the periphery of said disc.

5. In an apparatus for cutting lengths from thread, the combination of abase, a spindle supported on said base for rotational movement, a discmounted on said spindle and 7. A method for cutting uniform lengths froma supply thread consisting in continuously feeding the thread to a givenpoint, subjecting the thread at that point to centrifugal actionsubstantially at right angles to the direction of feeding, and cuttingthe thread at right angles to the direction of the centrifugal action. t

In testimony whereof I set my hand.

ANTONIO BERIA.

